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DSB75 Development Support Board Rev. B1 Hardware Description
Strictly confidential / Released
s
DSB75_hd_v08 Page 87 of 94 29.09.2005
sheet2
06.07.2004
SCHEMATIC
ASC2
ASC0
9pol SubD
R244
220R
DSB75
9pol SubD
ASC1
9pol SubD
TOP HIERARCHY LEVEL
1:1
B1
S200
1
2
3
LYT679-CO
V244
21
V200
BC847
B1
25
B2
6
C1
C2
3
1
E1
4
E2
5
6
7
8
9
220R
R243
220R
X202
1
2
3
4
100K
R251
220R
R236
R237
L201
600R/100MHZ
220R
R201
V242
LYT679-CO
21
C207
100N
R267
100K
220R
R235
C231
100K
R264
R205
220R
100N
LYT679-CO
21
R240
220R
C200
100N
GND
3V0
220R
R241
V234
LST679-CO
V235
21
R202
220R
GND
V240
LST679-CO
21
220R
R212
10
T4OUT
17
T5IN T5OUT
12
27
V+
V-
4
26
VCC
V239
LGT679-CO
21
VDD
R3IN
1118
R3OUT
SHDN
14
T1IN
24
T1OUT
5
23
T2IN
6
T2OUT
T3IN
22
T3OUT
7
T4IN
19
C1-
25
C2+
1
3
C2-
13
EN
GND
2
15
MBAUD
R1IN
821
R1OUT
R1OUTB
16
9
R2INR2OUT
20
GND
GND
3V0
GND
D201
MAX3237ECAI
28
C1+
C211
33P
NB_
100N
C208
VDD
2
3
4
5
6
7
8
9
3V0
GND
A
B
C
D
E
F
3V0
X205
1
V243
LST679-CO
21
3V0
R220
0R
R203
220R
100N
C230
C202
GND
220R
R211
T4IN
19 10
T4OUT
17
T5IN T5OUT
12
27
V+
V-
4
26
VCC
100N
9
R2INR2OUT
20
R3IN
1118
R3OUT
SHDN
14
T1IN
24
T1OUT
5
23
T2IN
6
T2OUT
T3IN
22
T3OUT
7
28
C1+
C1-
25
C2+
1
3
C2-
13
EN
GND
2
15
MBAUD
R1IN
821
R1OUT
R1OUTB
16
600R/100MHZ
220R
R238
D200
MAX3237ECAI
3V0
600R/100MHZ
L203
3V0
L202
GND
R270
10K
R242
220R
220R
R233
R250
47K
G
F
E
D
C
B
A
4K7
R252
GND
100N
C205
LGT679-CO
V230
21
GND
R234
220R
GND
220R
R209
10
20
VCC
C206
100N
R232
220R
2A2
2A3
15
17
2A4
19
2OE
9
2Y1
7
2Y2
5
2Y3
3
2Y4
GND
1A3
8
1A4
1
1OE
18
1Y1
16
1Y2
14
1Y3
12
1Y4
11
2A1
13
220R
SN74LVC244A
D220
2
1A1
4
1A2
6
GND
GND
GND
LST679-CO
V241
21
R213
LGT679-CO
V238
21
R246
33R
220R
R210
R200
220R
2
X206
12
R263
100K
0R
R214
X204
1
21
GND
LYT679-CO
V233
21
100N
R207
220R
V237
LST679-CO
C210
NB_
V232
LGT679-CO
21
GND
C203
V231
LGT679-CO
21
R206
220R
33P
GND
S201
1
2
3
C209
100N
100N
C204
100K
R266
3V0
2OE
9
2Y1
7
2Y2
5
2Y3
3
2Y4
GND
10
20
VCC
1Y1
16
1Y2
14
1Y3
12
1Y4
11
2A1
13
2A2
2A3
15
17
2A4
19
SN74LVC244A
D221
2
1A1
4
1A2
6
1A3
8
1A4
1
1OE
18
100K
R262
220R
R230
654321
100K
R260
R261
100K
10U
C232
3V0
3V0
10987
APPR'D
USER
DATE
R208
220R
3V0
Siemens AG
220R
R204
R231
220R
4
5
6
7
8
9
GND
X203
12
3V0
X201
1
2
3
V236
21
R239
220R
GND
R221
0R
C201
151413121110987654321
LST679-CO
R272
100K
3V0
0R
R215
100N
DCD0
RXD1_I
RXD2_I
CTS1_I
SYNC
DTR0
ASC_EN1
DTR0
TXD2_I
ASC_EN2
ASC_SD
ASC_SD
DTR
VDD_EN
PWR_IND
100K
R271
GND
RXD1
RTS1
PWR_IND
RXD2_GPIO9
TXD2_GPIO10
RTS0
CTS0
DCD0
TXD1_I
RING0
DSR0
RXD0_I
RTS1_I
CTS1
USC2
TXD0_I
USC1
RXD0_I
RXD0
TXD0
TXD0_I
TXD1
PWR_IND
ASC_SD
ASC_EN1
ASC_EN2
RING0
RXD0_I
TXD0_I
CTS0
RTS0
DSR0
NB = not mounted
Figure 52: Schematic sheet 2 – ASC0, ASC1 and ASC2 interface
- Hardware Description 1
- Contents 3
- Figures 4
- 0 Document History 7
- 1 Introduction 11
- 1.3 Scope of Delivery 12
- 1.4 Terms and Abbreviations 12
- 2 General Overview 14
- 2.2 System Overview 16
- Adjustable Resistors 17
- 2.4 Block Diagram 18
- 2.5 Interface Overview 19
- 3.2 Test Points 23
- 3.3 GPIO Lines 25
- Figure 9: SIM card interface 27
- Figure 11: RS-232 interfaces 29
- Table 9: Pin assignment of 1 31
- 3.6.2.1 Recommended Headset 36
- Figure 18: DAI interface 39
- 3.9 I²C Interface 43
- Figure 23: I²C interface 44
- 3.10 SD Card Interface 46
- 11 10 8 7 6 5 4 3 2 1 9 47
- 3.10.1 SD 4 Bit Mode 48
- 3.10.2 SD 1 Bit Mode 49
- 3.10.3 SPI Bus Mode 50
- 3.12 Analog Interface 53
- 3.13 Antenna Interface 55
- C400,401,405 58
- X602 pin. Function 61
- 3.14.3.2 Charging Circuit 62
- GSM module 63
- 3.14.5 Adjusting the V 64
- 4 Status LEDs 65
- 4.3 Indication of Power 67
- 4.4 Indication of I²C Lines 67
- 5.1 Overview of Switches 68
- 5.2 Overview of Jumpers 73
- Figure 48: Turn on circuit 77
- 6.1.3 Emergency Restart 78
- 7 Technical Data of DSB75 79
- ~~~~~~~~~~~~~~~ 82
- 8 Appendix 83
- APPR'D 84
- NB = not mounted 87
- NB_ = not mounted 88
- 8.3 Floor Plan of the DSB75 93
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